Capral Aluminium Trickle Vents

The Renson Invisivent is a thermally broken window ventilator that can be installed above Capral Futureline 440TB and 419TB sub frames, providing an almost invisible installation. Trickle Vents are a natural ventilation solution for healthy and energy-efficient homes. This catalogue covers two trickle vents provided by Capral Aluminium: Renson Invisivent and Renson Slotvent.